Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-25 @ 3:29 AM
Ignite Modification Date:
2025-12-25 @ 3:29 AM
NCT ID:
NCT00046605
Brief Summary:
To examine the associations of common variation in inflammation/thrombosis genes with intermediate quantitative phenotypes and subclinical coronary atherosclerosis in the Coronary Artery Risk Factor Development in Young Adults (CARDIA) Study, a large, bi-racial cohort study.
Detailed Description:
BACKGROUND:
Atherosclerosis is a major determinant of coronary heart disease and is determined by the interplay of genetic and environmental risk factors. Although atherosclerosis tends to aggregate in families, it does not exhibit classical Mendelian segregation. Thus, the genes that determine an individual's risk of atherosclerosis likely involve multiple sites within genes and interactions between genes, all of which define a genetic risk that is modified by the host environment.
DESIGN NARRATIVE:
The genetic epidemiology study examines the associations of common variation in inflammation/thrombosis genes with intermediate quantitative phenotypes and subclinical coronary atherosclerosis in the Coronary Artery Risk Factor Development in Young Adults (CARDIA) Study, a large, bi-racial cohort study. The set of 25 candidate genes involve pathways (cytokines, chemokines, and their receptors; cellular adhesion molecules; and, coagulation proteins) and include several receptor-ligand pairs. Using cladistic analysis and the resources of the Program in Genomic Applications (PGA), the investigators will identify a limited set of single nucleotide polymorphisms (range 3-10 SNPs per gene) that characterize common haplotypes in these candidate genes within persons of African descent and European descent. DNA from the CARDIA Year 10 examination (n = 3,950 subjects) will be genotyped for the selected variants that characterize the common haplotypes. Data on the presence of common variants and haplotypes will be incorporated into the CARDIA Study database. Levels of two important intermediate phenotypes, fibrinogen and C-reactive protein (CRP) were previously determined. Non-invasive assessment of coronary atherosclerosis, defined as the presence of coronary artery calcification (CAC), was obtained on CARDIA participants at the Year 15 exam. Analyses will be stratified by race/ethnicity and focus on the associations of the common haplotypes with fibrinogen, CRP, and CAC measured in early adult life. Secondarily, the investigators will explore possible gene-gene and gene-environment interactions. The proposed multi-disciplinary collaboration should enhance the sensitivity and specificity of efforts to assess the associations of common variation in sets of inflammation/thrombosis candidate genes and cardiovascular risk in young adults.
Study:
NCT00046605
Study Brief:
Protocol Section:
NCT00046605